Normal approximation to compute the probability, Civil Engineering

Assignment Help:

Normal approximation to compute the probability:

A lot contains 100 articles of which 10 are defective. The lot is rejected if a random sample of 10 articles drawn from the lot contains more than 2 defectives. Use normal approximation to compute the probability that the lot is accepted.

Solution:

Let X represents the number of defective articles in the sample. The variable X follows the hypergeometric distribution with parameters

N = 100,n - 10,M = l0 and has E(X) = 10.(10/100) = 1 and

V(X) =σ2 = 10.10/100.(1-(10/100)) (100-10/100-1) =9/11

The required probability is

903_Normal approximation to compute the probability.png


Related Discussions:- Normal approximation to compute the probability

Foundation, Explain briefly shallow foundation?

Explain briefly shallow foundation?

Staircase, The Figure 1 below shows a section through a stairway for a gara...

The Figure 1 below shows a section through a stairway for a garage in a new proposed dwelling. The stairway is 3 meters wide with 300 mm wide treads(7 treads) and 170 mm high riser

Measure the ultimate settlement due to pumping, A clay stratum of 18 metres...

A clay stratum of 18 metres thickness was found above a sand stratum when a boring was made. The clay was consolidated under the present overburden pressure. The hydrostatic pressu

Designing lateral resistance of piles, Question While designing later...

Question While designing lateral resistance of piles , have to engineers only use earth pressure against pile caps simply? Answer In case of designing lateral loa

State the term - relaxation of stress in steel, State the term - Relaxation...

State the term - Relaxation of Stress in Steel If we keep a high-tensile steel wire stretched and maintained at a constant strain, the value of the force in the wire does not

Geotechnical engineering, what are the 2 principle factors affecting the al...

what are the 2 principle factors affecting the allowable bearing pressure in the design of a specific footing

Handheld inspection tool for underwater inspection of bridge, Explain Handh...

Explain Handheld Inspection tools for Underwater Inspection of Bridge? Handheld tools such as flash lights, rulers, and tape measures for documenting areas; small or large hamm

What is the group capacity, State the group efficiency of a rectangular gro...

State the group efficiency of a rectangular group of piles with 4 rows, 3 piles per row, the uniform pile spacing being 3 times the pile diameter. If the individual pile capacity i

Rectilinear motion, A train starts from rest as A and accelerates at 1,7m/...

A train starts from rest as A and accelerates at 1,7m/s2 to full speed at which it maintains until the brakes gives it a deceleration of 1,7m/s2 to stop at B. AB=1,6km. determine

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd